Us Magazine reports that the duo have called it quits, and that 24-year-old Agron moved out of the home she shared with her 20-year-old Brit boy toy last week.
The couple were recently seen together at the I Am Number Four premiere, where Pettyfer dropped a hint about the trouble that was brewing when he claimed that all the attention on his private life was "overwhelming".
But the split still came as a surprise. Just last month, he gushed about his (then) main squeeze with Ellen DeGeneres saying, "She's an amazing woman and she's got this old school, classic movie star elegance to her. She's amazing."
And she did the same, telling Sugar magazine's Winter 2011 issue, "Alex might see himself as a bad boy, but he's actually very sweet in real life."
When contacted on the sudden split, Agron's rep told E! she refuses to comment on her client's personal life.
Looks like the starlet is now dealing with heartbreak both on and off the screen.